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A Half-Bridge Buffer Circuit with Clamped Energy Feedback
  • +1
  • Jian Yu,
  • Jia ZeLin,
  • Zhang ZiXiang,
  • Wu YiMei
Jian Yu
Shanxi University School of Automation and Software
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Jia ZeLin
Shanxi University School of Automation and Software

Corresponding Author:jzl948126762@163.com

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Zhang ZiXiang
Shanxi University School of Automation and Software
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Wu YiMei
Shanxi University School of Automation and Software
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Abstract

Configuring half-bridge circuits with CRC or RC circuits at both ends of the bus, RC circuits at both ends of the device, and in conjunction with reduced loop inductance is a typical solution to address half-bridge switching oscillations and voltage overshoots, and to optimize electromagnetic interference (EMI) characteristics. However, this scheme still has the problems of poor damping effect, high degree of overvoltage, and high turn-on loss. In this paper, we remove the switch-by-switch RC circuit to reduce extra losses, actively increase the inductance of the feeder circuit to achieve zero current turn-on, and design a DC(VS)-RC absorption topology with energy return circuits at both ends of the bus. The designed topology absorbs the overvoltage energy stored in the inductor of the switching converter and feeds it back to the bus to reduce the overvoltage and improve efficiency. Experimental studies and comprehensive comparative studies verify the effectiveness of the proposed scheme. The experimental results show that DC(VS)-RC with increasing loop inductance has good overvoltage and oscillation suppression performance and can significantly reduce the switching losses.
15 Jan 2025Submitted to International Journal of Circuit Theory and Applications
16 Jan 2025Submission Checks Completed
16 Jan 2025Assigned to Editor
16 Jan 2025Review(s) Completed, Editorial Evaluation Pending
20 Jan 2025Reviewer(s) Assigned